All the five were directly involved in killing the SDPI leader K S Shan, ADGP (Law and Order) Vijay Sakhare said.
"There is a larger conspiracy behind the killings of Sreenivas and Shan," said ADGP (Law and Order) Vijay Sakhare, the head of the Special Investigation Team (SIT) probing the two back to back murder cases, which had rocked the state recently.
In view of the recent back-to-back murders of two political activists in the state, Kerala DGP Anil Kant on Friday directed district police chiefs to take stringent action against those spreading fake news and false message through social media and book the administrators of such platforms who allow discussion on them.
Following the killing of an SDPI state secretary late Saturday night, a BJP leader was hacked to death less than 12 hours later on Sunday morning and later, prohibitory order under Code of Criminal Procedure (CrPC) Section 144 was imposed in the entire Alappuzha district, additional police force was deployed there and senior officers camped there to monitor the law and order situation.